Color

#4db40e

#4db40e
hex#4db40e
rgbrgb(77, 180, 14)
hslhsl(97, 86%, 38%)
oklchoklch(0.682 0.206 137.9)
Closest name: Frog (#58bc08)Relative luminance 0.3425

Colors that go with #4db40e

Royal Blue, Taupe and Medium Orchid lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#740eb4

#a1b40e · #0eb421

#0e4db4 · #b40e4d

Split-complementary

Open in tool →

#210eb4 · #b40ea1

#0ea1b4 · #740eb4 · #b4210e

Contrast

#4db40e as textRatioAAAA largeAAAFix
Aaon white
2.68:1failfailfail
  • AA: use #39850a as the text (4.63:1)
  • AAA: use #2b6407 as the text (7.17:1)
  • AA: or shift the background to #363636 (4.52:1)
  • AAA: or shift the background to #121212 (7:1)
Aaon black
7.85:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4db40e as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #4db40e
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #4db40e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4db40e-a9bea2-624edf-1f2d20-f0f1e9?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md